05420500 DATA: Discharge Tables, 2000

Station list Available data
UPPER MISSISSIPPI RIVER BASIN

05420500 MISSISSIPPI RIVER AT CLINTON, IA

LOCATION.-- Lat 41°46'50", long 90°15'07", in NW1/4 sec.34, T.81 N., R.6 E., Clinton County, Hydrologic Unit 07080101, on right bank at end of Eighth Avenue in Camanche, 5.0 mi upstream from Wapsipinicon River, 6.4 mi downstream from Clinton, 10.6 mi downstream from Lock and Dam 13, and at mile 511.8 upstream from Ohio River.

DRAINAGE AREA.-- 85,600 mi², approximately, at Fulton-Lyons Bridge at Clinton.

PERIOD OF RECORD.--
SURFACE-WATER DISCHARGE AND STAGE

DISCHARGE: June to August 1873 (fragmentary), October 1873 to current year (October 1932 to September 1939, published as "at Le Claire")(June 1873 to December 1932 published in the Iowa State Planning Board report "Stream-flow records of Iowa, 1873-1932").

SURFACE-WATER QUALITY

CHEMICAL: October 1974 to September 1987, October 1994 to current.

SEDIMENT: October 1994 to September 30, 1997 (discontinued).

SPECIFIC CONDUCTANCE: July 1975 to September 1976; sporadic measurements February 1977 to September 1981; October 1994 to Septemter 30, 1997 (discontinued).

WATER TEMPERATURE: July 1975 to April 1989; January 1995 to September 30, 1997 (discontinued).

MISCELLANEOUS: Periodic observations.

REVISED RECORDS.-- WDR IA-75-1: 1974.

GAGE.-- Water-stage recorder, U.S. Army Corps of Engineers satellite telemeter and rain gage. Datum of gage is 562.68 ft above sea level. June 6, 1969 to Sept. 16, 1988, water-stage recorder at site 400 ft. upstream at same datum. Auxiliary water-stage recorder at Lock and Dam 13 since Oct. 1, 1958. See WSP 1728 for history of changes prior to Oct. 1, 1955.

REMARKS.-- Minor flow regulation caused by navigation dams. During periods of ice effect, sediment samples are collected in open water channel. Records of specific conductance are obtained from suspended-sediment samples at time of analysis.

EXTREMES OUTSIDE PERIOD OF RECORD.--
SURFACE-WATER DISCHARGE AND STAGE: Maximum stage known since at least 1828, that of Apr. 28, 1965.
SUSPENDED-SEDIMENT CONCENTRATIONS: Maximum daily mean 294 mg/L Apr. 7, 1997; minimum daily mean, 1 mg/L several days in December 1995 - January 1996.
SUSPENDED-SEDIMENT LOADS: Maximum daily 108,000 tons Apr. 7, 1997; minimum daily 96 tons Jan. 9, 1996.
SPECIFIC CONDUCTANCE: Maximum daily, 560 microsiemens Nov. 24 to Dec. 3, 1979; minimum daily, 220 microsiemens Apr. 19, 20, 1976; Nov. 8-18, 1980.
WATER TEMPERATURE: Maximum daily, 31.5 C July 21-23, 1983; minimum daily, 0.0 C on many days during winter periods.

REMARKS FOR CURRENT YEAR.-- Records good except those for estimated daily discharges, which are poor.

DISCHARGE, IN CUBIC FEET PER SECOND, WATER YEAR OCTOBER 1999 TO SEPTEMBER 2000 DAILY MEAN VALUES
DAY	OCT	NOV	DEC	JAN	FEB	MAR	APR	MAY	JUN	JUL	AUG	SEP

1	36200	34800	33200	34800	e27000	61900	46200	55700	57400	100000	45000	37400
2	33800	35000	33900	35200	e28000	68000	46400	50800	76500	96700	43900	35100
3	33600	35400	35400	35500	e28000	72100	46600	44500	87300	93600	40600	29500
4	34300	34800	36100	37100	e27000	76800	45400	39900	93300	84000	36300	24500
5	34700	33100	36900	32900	e30000	78600	43400	38300	101000	72000	35300	23700

6	34200	31500	35700	29600	e30000	81200	40900	36800	104000	67100	34900	27700
7	36000	31900	34200	30700	e30000	74900	37400	35600	105000	61700	37200	30700
8	35900	33600	33400	33200	e30000	74700	38700	35500	107000	55100	38500	34000
9	35600	35100	33200	35300	e30500	74400	40300	35500	108000	51800	38100	33500
10	36500	34400	33100	36100	e30500	72400	39400	36600	110000	51200	35700	32000

11	37000	35300	32200	34900	e31000	69500	39200	36400	113000	e60000	29300	33900
12	37900	35900	32500	30900	e31000	64400	36400	37900	117000	68200	28200	36300
13	36600	36000	33200	29800	e31000	60900	36200	42900	120000	75500	29300	37200
14	36900	36000	33700	27900	e33000	59000	34100	42100	124000	87000	29400	37100
15	34500	36200	34000	26000	e33000	57500	34500	41600	125000	91200	33700	44300

16	32000	33300	32600	25400	e33000	56900	35800	41100	120000	97700	37100	48800
17	32000	31000	27500	26400	e33000	57200	39300	39800	109000	97300	37400	51100
18	32100	28800	25300	26500	e32500	56300	39700	41700	94500	97000	41100	51300
19	32300	29600	25500	26500	e32500	56000	37300	49600	86400	97900	41600	46100
20	32300	28800	25500	29500	e32000	55500	42000	58600	86200	97700	42000	39200

21	32500	28500	e20000	e27000	31900	51400	48000	69800	85800	91900	47500	33000
22	32400	30900	e17500	e27000	30400	48500	48700	73300	82600	81700	52700	29400
23	32200	32800	e18000	e27000	29000	47300	48800	72800	77500	72500	53900	29800
24	32500	36600	e18500	e27000	32300	43200	48700	71000	83500	66400	48300	35600
25	32700	40700	e19000	e27000	43800	42500	51200	68000	87600	62100	39400	32800

26	34500	39000	e18500	e27000	59900	41700	54300	65500	92900	55200	34500	28500
27	35700	36700	e20000	e27000	64700	40200	62900	65600	93100	42600	34000	26600
28	35600	36500	e21000	e27000	58800	41200	63400	65400	97200	40400	32900	28000
29	35800	36500	e23000	e27000	57800	43800	63500	60400	99300	40000	32900	27800
30	35000	35100	e31000	e27000	---	43700	61800	56100	100000	41700	37300	27700

31	34300	---	36000	e27000	---	45900	---	53000	---	44100	37800	---

TOTAL	1067600	1023800	889600	921200	1021600	1817600	1350500	1561800	2944100	2241300	1185800	1032600
MEAN	34440	34130	28700	29720	35230	58630	45020	50380	98140	72300	38250	34420
MAX	37900	40700	36900	37100	64700	81200	63500	73300	125000	100000	53900	51300
MIN	32000	28500	17500	25400	27000	40200	34100	35500	57400	40000	28200	23700
AC-FT	2118000	2031000	1765000	1827000	2026000	3605000	2679000	3098000	5840000	4446000	2352000	2048000
CFSM	.40	.40	.34	.35	.41	.68	.53	.59	1.15	.84	.45	.40
IN.	.46	.44	.39	.40	.44	.79	.59	.68	1.28	.97	.52	.45

e Estimated

STATISTICS OF MONTHLY MEAN DATA FOR WATER YEARS 1874 - 2000, BY WATER YEAR (WY)
MEAN	40830	39270	27880	25780	28110	50670	89460	81530	68930	55990	37790	38030
MAX	203600	146800	73590	54100	65680	127500	175900	212400	182100	198900	113400	92380
(WY)	1882	1882	1882	1973	1966	1973	1997	1888	1892	1993	1993	1938
MIN	13490	13760	11120	11390	14000	17600	26040	23190	15420	14690	12460	13870
(WY)	1934	1934	1934	1890	1893	1934	1931	1977	1988	1988	1936	1933

SUMMARY STATISTICS	FOR 1999 CALENDAR YEAR		FOR 2000 WATER YEAR		WATER YEARS 1874 - 2000
ANNUAL TOTAL	21380500		17057500
ANNUAL MEAN	58580		46610		48730
HIGHEST ANNUAL MEAN					94690	1882
LOWEST ANNUAL MEAN					18870	1934
HIGHEST DAILY MEAN	144000	May 19	125000	Jun 15	307000	Apr 28 1965
LOWEST DAILY MEAN	17500	Dec 22	17500	Dec 22a	6500	Dec 25 1933
ANNUAL SEVEN-DAY MINIMUM	18800	Dec 21	18800	Dec 21	7430	Dec 24 1933
INSTANTANEOUS PEAK FLOW			126000	Jun 14b
INSTANTANEOUS PEAK STAGE			15.36	Jun 15	24.65	Apr 28 1965
ANNUAL RUNOFF (AC-FT)	42410000		33830000		35300000
ANNUAL RUNOFF (CFSM)	.68		.54		.57
ANNUAL RUNOFF (INCHES)	9.29		7.41		7.73
10 PERCENT EXCEEDS	111000		84500		94400
50 PERCENT EXCEEDS	45600		36600		37500
90 PERCENT EXCEEDS	32300		27800		19000

a - Ice affected.
b - Also June 15.